| #ifndef _ASM_IRQ_H |
| #define _ASM_IRQ_H |
| |
| /* |
| * linux/include/asm/irq.h |
| * |
| * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar |
| * |
| * IRQ/IPI changes taken from work by Thomas Radke |
| * <tomsoft@informatik.tu-chemnitz.de> |
| */ |
| |
| #define TIMER_IRQ 0 |
| |
| /* |
| * 16 8259A IRQ's, 208 potential APIC interrupt sources. |
| * Right now the APIC is mostly only used for SMP. |
| * 256 vectors is an architectural limit. (we can have |
| * more than 256 devices theoretically, but they will |
| * have to use shared interrupts) |
| * Since vectors 0x00-0x1f are used/reserved for the CPU, |
| * the usable vector space is 0x20-0xff (224 vectors) |
| */ |
| #ifdef CONFIG_X86_IO_APIC |
| #define NR_IRQS 224 |
| #else |
| #define NR_IRQS 16 |
| #endif |
| |
| static __inline__ int irq_cannonicalize(int irq) |
| { |
| return ((irq == 2) ? 9 : irq); |
| } |
| |
| extern void disable_irq(unsigned int); |
| extern void disable_irq_nosync(unsigned int); |
| extern void enable_irq(unsigned int); |
| |
| #define ARCH_HAS_NMI_WATCHDOG 1 |
| |
| #endif /* _ASM_IRQ_H */ |
